2000 Mercedes-benz CLK Class Cabriolet Owners Manual

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ABS malfunction indicator lamp The yellow ESP warning lamp in the speedometer dial comes on with the electronic key in steering lock position 2. It should go out with engine running. See page 208 if the warning lamp lights up or flashes when the vehicle is moving. BAS/ESP malfunction indicator lamp BAS ESP The malfunction indicator lamp for the ESP is combined with that of the BAS. The yellow BAS/ESP malfunction indicator lamp in the instrument cluster comes on with the electronic key in steering lock position 2. It should go out with the engine running. If the BAS/ESP malfunction indicator lamp remains illuminated with the engine running, see page 209 ABS The ABS malfunction indicator lamp in the instrument cluster comes on with the electronic key in steering lock position 2 and should go out with the engine running. When the ABS malfunction indicator lamp symbol and warning in the instrument cluster remains illuminated while the engine is running, it indicates that the ABS has detected a malfunction and has switched off. In this case, the brake system functions in the usual manner, but without antilock assistance. With the ABS malfunctioning, the BAS and ESP are also switched off. Both malfunction indicator lamps come on with the engine running. If the charging voltage falls below 10 volts, the malfunction indicator lamp comes on and the ABS is switched off. When the voltage is above this value again, the malfunction indicator lamp should go out and the ABS is operational. Have the system checked at your authorized Mercedes-Benz Center as soon as possible. See page 206 for notes on the antilock brake system (ABS). Malfunction and indicator lamps Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 219 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and indicator lamps Telescoping steering column – indicator lamp Seat belt warning lamp The indicator lamp in the instrument cluster comes on with the electronic key in steering lock position 2 and should go out with the engine running. If the indicator lamp does not go out after starting the engine, the adjustable steering column is not properly locked. For locking the adjustable telescoping steering column, see page 74. With the electronic key in steering lock position 2, the seat belt warning lamp comes on and a warning sounds for approx. 6 seconds if the driver’s seat belt is not fastened. 220 Malfunction and indicator lamps in the center console AIRBAG OFF indicator lamp The 7 indicator lamp will light up for approx. 6 seconds when you turn the electronic key in steering lock to position 1 or 2. The 7 indicator lamp stays lit as long as a BabySmartTM compatible child seat is properly installed on the front passenger seat. It indicates that the front passenger airbag is switched off. See page 63 for BabySmartTM deactivation system. BabySmartTM is a trademark of Siemens Automotive Corp. Roll bar warning lamp The roll bar warning lamp is located in the roll bar switch in the center console. Roll bar switch see page 52. With the electronic key in steering lock position 2, the roll bar warning lamp comes on and should go out with the engine running. With the engine running and the roll bar lowered, the warning lamp in the roll bar switch will blink for approx. 15 seconds. The blinking is reminding you to raise the roll bar if the rear passenger seats are occupied. Warning! If the warning lamp does not go out after starting the engine, or if it comes on while driving, then the roll bar system is not operating properly and may not activate in an accident. In this case, raise the roll bar manually (see page 51) continuing to drive. before Note: Have the roll bar system checked at your authorized Mercedes-Benz Center as soon as possible. Malfunction and indicator lamps Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 221 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages Malfunction and warning messages in the multifunction display Malfunction and warning messages for the following systems will be displayed immediately in the multifunction display. They are divided into three categories Category C1: Messages of most immediate priority. These cannot be clerared from the instrument cluster using the button. Categories C2 and C3: Messages of less immediate priority. These messages can be cleared from the instrument using the J button and are then stored in the malfunction message memory. See page 102. Notes: Certain malfunction and warning messages are accompanied by an audible signal. Malfunction and warning messages in red are always accompanied by an audible signal. Temporary messages such as “SWITCH OFF LIGHTS” will not be stored in the malfunction message memory. Warning! All messages contain important information which should be taken note of and, where malfunction indicated, addressed as soon as possible at an authorized Mercedes-Benz Center. Failure to repair condition noted may cause damage not covered by the Mercedes-Benz Limited Warranty, or result in property damage or personal injury. 222 DISPLAY DEFECTIVE DISPLAY DEFECTIVE Line 1 Line 2 DISPLAY DEFECTIVE VISIT WORKSHOP! C* Line 1 Line 2 DISPLAY DEFECTIVE VISIT WORKSHOP! C* * C = Category, see page 222 * C = Category, see page 222 This message is displayed to indicate that the information being relayed by the engine control unit is no longer complete. The coolant temperature gauge, tachometer, or the cruise control may have failed. The displays for several systems have failed. Some systems themselves may also have failed. Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 223 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages BATTERY/ALTERNATOR Line 1 Line 2 BATTERY/ALTERNATOR VISIT WORKSHOP! OVERVOLTAGE VISIT WORKSHOP! UNDERVOLTAGE CONSUMER DEFECTIVE! C* * C = Category, see page 222 This message indicates a malfunction which must be repaired immediately. It may indicate that the poly-V-belt has broken. Should this condition occur, the poly-V-belt must be replaced before continuing to operate the vehicle. Otherwise, the engine will overheat due to an inoperative water pump which may result in damage to the engine. Do not continue to drive the vehicle with this message displayed. Doing so could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. 224 ABS-SYSTEM BRAKE ASSIST P54.30-2938-21 Line 1 ABS-SYSTEM Line 2 VISIT WORKSHOP! C* Line 1 Line 2 BRAKE ASSIST VISIT WORKSHOP! * C = Category, see page 222 DISPLAY DEFECTIVE VISIT WORKSHOP! C* A malfunction has been detected in the system. The brake system functions in the usual manner, but without antilock assistance. With the ABS malfunctioning, the BAS and ESP are also switched off. Have the system checked at your authorized Mercedes-Benz Center as soon as possible. * C = Category, see page 222 A malfunction has been detected in the system. The brake system functions in the usual manner, but without BAS. Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 225 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages BRAKE LINING WEAR BRAKE FLUID Line 1 Line 2 BRAKE LINING WEAR VISIT WORKSHOP! C* Line 1 Line 2 BRAKE FLUID VISIT WORKSHOP! C* * C = Category, see page 222 * C = Category, see page 222 When this message appears during braking, it indicates that the brake pads are worn down. Have the brake system checked at your authorized Mercedes-Benz Center as soon as possible. Warning! Driving with this message displayed can result in an accident. Have your brake system checked immediately. Don’t add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned. 226 PARKING BRAKE ENGINE FAN Line 1 Line 2 PARKING BRAKE RELEASE BRAKE! C* Line 1 ENGINE FAN Line 2 VISIT WORKSHOP!1 C* * C = Category, see page 222 * C = Category, see page 222 Parking brake, see page 192. 1 The cooling fan for the coolant is faulty. Observe coolant temperature gauge while driving, see page 84. Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 227 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages COOLANT (coolant level) Line 1 COOLANT Line 2 CHECK LEVEL! C* * C = Category, see page 222 When this message appears while driving, the coolant level has dropped below the required level. If no leaks are noticeable and the engine temperature does not increase, continue to drive to the nearest service station and have coolant added to the coolant system. The low engine coolant level warning should not be ignored. Extended driving with the symbol displayed may cause serious engine damage not covered by the Mercedes-Benz Limited Warranty. Notes: Do not drive without coolant in the cooling system. The engine will overheat causing major engine damage. Monitor the coolant temperature gauge while driving. See page 248 for instructions on adding coolant. Warning! Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You can be seriously burned. 228 COOLANT TEMP. (coolant temperature) Line 1 Line 2 COOLANT TEMP. VISIT WORKSHOP!1 C* * C = Category, see page 222 1 Observe coolant temperature gauge, see page 84. This may indicate that the poly-V-belt has broken. Should this condition occur, the poly-V-belt must be replaced before continuing to operate the vehicle. Otherwise, the engine will overheat due to an inoperative water pump which may result in damage to the engine. Do not continue to drive the vehicle with this message displayed. Doing so could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. During severe operating conditions and stop-and-go city traffic, the coolant temperature may rise close to the red marking. The engine should not be operated with the coolant temperature in the red zone. Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty. Warning! Driving when your engine is badly overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns and can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Turn off the engine, get out of the vehicle and do not stand near the vehicle until it cools down. Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 229 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages LIGHTING SYSTEM Line 1 Line 2 LAMP DEFECTIVE CHECK LAMPS! DISPLAY DEFECTIVE VISIT WORKSHOP! C* * C = Category, see page 222 When the message appears after starting the engine, or if it comes on while driving, this indicates a failure in the parking lamp, taillamp, stop lamp, or low beam headlamp. See page 269 for instructions on replacing bulbs. If an exterior lamp fails, the message will appear only when that lamp is switched on. If a brake lamp fails, the message will appear when applying the brake and stays on until the engine is turned off. Note: If additional lighting is installed (e.g. auxiliary headlamps etc.) be certain to connect into the fuse before the failure indicator monitoring unit order to avoid damaging the system. 230 LIGHT SENSOR STEER. WHEEL ADJUST. With the electronic key removed and the driver’s door open, a warning sounds and the message “SWITCH OFF LIGHTS!” appears in the multifunction indicator if the vehicle’s exterior lamps (except standing lamps) are not switched off. Line 1 Line 2 C* STEER. WHEEL ADJUST. * C = Category, see page 222 For locking the adjustable telescoping steering column, see page 74. Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 231 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages OIL TEMP. (engine oil temper atur e) ENGINE OIL LEVEL Line 1 Line 2 OIL TEMP. TOO HIGH REDUCE REVS.! C* * C = Category, see page 222 There is a danger of engine damage - change to a higher gear or reduce road speed. Check the engine oil level as soon as the vehicle returns to operating temperature. See Engine oil level indicator on the page 110. Line 1 Line 2 ENGINE OIL LEVEL CHECK LEVEL!1 ENGINE OIL LEVEL STOP, ENGINE OFF!2 ENGINE OIL LEVEL REDUCE OIL LEVEL!3 ENGINE OIL LEVEL VISIT WORKSHOP!4 ENGINE OIL SENSOR VISIT WORKSHOP!5 ENGINE OIL VISIT WORKSHOP!6 * C = Category, see page 222 C* 1 The engine oil level must be checked immediately. See Engine oil level indicator on page 110 232 Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages 2 There is no oil in the engine. There is a danger of engine damage. 3 There is a risk of damaging the engine or catalytic converter. The engine oil level must be checked immediately. See Engine oil level indicator on page 110. 4 The engine oil level has dropped to a critical level. Check the engine oil level immediately. See Engine oil level indicator on page 110 and check the engine for visible leakage (loss of oil). 5 The measuring system is malfunctioning. 6 It may be that there is water in the engine oil. Have the engine oil checked. When the “ENGINE OIL LEVEL – CHECK LEVEL” message appears while the engine is running and at operating temperature, the engine oil level has dropped to approximately the minimum mark on the dipstick. When this occurs, the warning will first come on intermittently and then stay on if the oil level drops further. If no oil leaks are noted, continue to drive to the nearest service station where the engine oil should be topped to the “full” mark on the dipstick with an approved oil. The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. 233 ELEC. STABIL. PROG. (Electronic stability program) 1 A malfunction has been detected in the system. Pressing the accelerator pedal will require greater effort. Only partial engine output will be available. 2 This message may be displayed if the power supply was interrupted (battery disconnected or empty). 3 Synchronize ESP. See page 209 Line 1 Line 2 DISPLAY DEFECTIVE VISIT WORKSHOP! ELEC. STABIL. PROG. VISIT WORKSHOP!1, 2, 3 C* * C = Category, see page 222 Malfunction and warning messages Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 234 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Malfunction and warning messages WASHER FLUID Line 1 Line 2 WASHER FLUID CHECK LEVEL! C* * C = Category, see page 222 When this message appears while the engine is running, the level of the reservoir has dropped to approx. 1/3 of the total volume. The reservoir should be refilled with the prescribed mixture of MB Windshield Washer Concentrate “S” and water or the Concentrate and commercially available premixed windshield washer solvent/antifreeze, depending on ambient temperature, at the next opportunity. The reservoir for the windshield and headlamp washer systems is located in the engine compartment. See windshield washer system on page 249 for instructions on adding washer fluid. 235 236 Practical hints First aid kit Shelf below rear window Stowing things in the vehicle Luggage cover Spare wheel, vehicle tools, storage compartment Vehicle jack Fuses Hood Checking engine oil level Automatic transmission fluid level Coolant level Adding coolant Windshield washer / headlamp clean.system Windshield and headlamp washer fluid mixing ratio Wheels Tire replacement Rotating wheels Spare wheel 238 238 238 238 240 241 242 244 246 247 247 248 249 249 250 250 251 252 Changing wheels Tire inflation pressure Battery Jump starting Towing the vehicle Transmission selector lever, manually unlocking Bulbs Adjusting headlamp aim Changing batteries in the electronic main key Raising soft top manually Antenna Manual release for fuel filler flap Trunk lamp Replacing wiper blade insert 254 259 261 263 265 268 269 274 277 280 287 287 288 288 237 Instruments and controls First aid kit Operation Driving Instrument cluster display Practical hints Car care Technical data Index First aid kit Luggage cover The first aid kit is stored in the left trunk well. Shelf below rear window Warning! The shelf below the rear window should not be used to carry objects. This will avoid such objects from being thrown about and injuring vehicle occupants during an accident or sudden maneuver. The trunk is the preferred place to carry objects. Stowing things in the vehicle Warning! To help avoid personal injury during a collision or sudden maneuver, exercise care when stowing things. Put luggage or cargo in the trunk if possible. Do not pile luggage or cargo higher than the seat backs. Do not place anything on the shelf below the rear window. 1 Handle 2 Holder To close compartment: Pull out on handle (1) to the stop and guide luggage cover into left and right holders (2). 238 Important! To prevent damage to soft top or luggage/cargo when lowering the roof: • load trunk only to the height of the luggage cover, • do not permit luggage/cargo to raise the closed luggage cover, • do not load anything on top of the luggage cover, • do not operate the luggage cover with the soft top lowered. Doing so will result in damage to the luggage cover or the soft top. Note: Opening and closing of the soft top can only be done with the luggage cover and trunk lid closed. P65.10-2007-26 To open compartment: Press button (arrow). Unhook luggage cover from holders (2) and guide luggage cover with handle (1) into storage compartment until handle (1) locks in place. Luggage cover Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 239 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Spare wheel, vehicle jack Spare wheel, vehicle tools, storage compartment 1 Trunk floor 2 Handle 3 Luggage bowl 4 Vehicle tools Lift trunk floor and engage handle in grip molding of luggage cover. To remove spare tire: Turn luggage bowl counterclockwise and remove. To store spare tire: Place spare tire in wheel well and secure it with luggage bowl. Turn luggage bowl clockwise to its stop. Note: Always lower trunk floor before closing trunk lid. 240 Vehicle jack 1 Jack arm 2 Jack base Warning! The jack is designed exclusively for jacking up the vehicle at the jack tubes built into either side of the vehicle. To help avoid personal injury, use the jack only to lift the vehicle during a wheel change. Never get beneath the vehicle while it is supported by the jack. Keep hands and feet away from the area under the lifted vehicle. Always firmly set parking brake and block wheels before raising vehicle with jack. Do not disengage parking brake while the vehicle is raised. Be certain that the jack is always vertical when in use, especially on hills. Always try to use the jack on level surface. Be sure that the jack arm is fully inserted in the jack tube. Always lower the vehicle onto sufficient capacity jackstands before working under the vehicle. P40.10-2027-26 See illustration for proper storage of jack. Before storing the jack on the felt in the spare wheel well, the jack arm must be lowered almost to the base of the jack. Spare wheel, vehicle jack Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 241 Index Operation Driving Instrument cluster display Practical hints Car care Technical data Index Instruments and controls Fuses Fuses Before replacing a blown fuse, determine the cause of the short circuit. Spare fuses are supplied inside the main fuse box (1). Observe amperage and color of fuse. A special fuse puller is supplied with the vehicle tools. Always use a new fuse for replacement. Never attempt to repair or bridge a blown fuse. A fuse chart can be found inside the corresponding fuse box cover. Fuse box in engine compartment 1 Main fuse box in engine compartment To gain access to the main fuse box (1), press clamp (arrow), lift the fuse box cover up and remove it. To close the main fuse box, engage back end of cover and let front end snap into place. 242 Auxiliary fuse box below the trunk floor Auxiliary fuse box in the dashboard 2 Auxiliary fuse box below the trunk floor. 3 Auxiliary fuse box to left of exterior lamp switch. To gain access, lift trunk floor. To gain access, open door, pry off cover (3) and remove. Fuses Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 243 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Engine compartment Hood Warning! To help prevent personal injury, stay clear of moving parts when the hood is open and the engine is running. Be sure the hood is properly closed before driving. When closing hood, use extreme caution not to catch hands or fingers. The engine is equipped with a transistorized ignition system. Because of the high voltage it is dangerous to touch any components (ignition coils, spark plug sockets, diagnostic socket) of the ignition system • with the engine running, • while starting the engine, • if ignition is “on” and the engine is turned manually. If you see flames, steam or smoke coming from the engine compartment, or if the coolant temperature gauge indicates that the engine is overheated, do not open the hood. Move away from vehicle and do not open the hood until the engine has cooled. If necessary, call a fire department. P88.40-2025-26 To open: To unlock the hood, pull release lever (1) under the driver’s side of the instrument panel. At the same time a handle will extend out of the radiator grill (it may be necessary to lift the hood up slightly). Caution! To avoid damage to the windshield wiper or hood, open the hood only with wiper in the parked position. 244 3 To close: Lower hood and let it drop into lock from a height of approx. 1 ft. (30 cm), assisting with hands placed flat on edges of hood (3). To avoid hood damage, please make sure that hood is fully closed. If not, repeat closing procedure. Do not push down on hood to attempt to fully close it. P88.40-2017-26 Pull handle (2) to its stop out of radiator grill and open hood (do not pull up on handle). Engine compartment Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 245 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Engine compartment Checking engine oil level (CLK 320 shown) 1 Oil dipstick 2 Oil filler cap To check the engine oil level, park vehicle on level ground, with engine at normal operational temperature. Check engine oil level approximately 5 minutes after stopping the engine, allowing for the oil to return to the oil pan. Wipe oil dipstick clean prior to checking the engine oil level. Fully insert dipstick in tube, and remove after three seconds to obtain accurate reading. Oil level must be between the lower (min) and upper (max) mark of the dipstick. Fill quantity between upper and lower dipstick marking level is approximately 2.1 US qt (2.0 l). Do not overfill the engine. Excessive oil must be drained or siphoned. It could cause damage to engine and catalytic converter not covered by the Mercedes-Benz Limited Warranty. See malfunction and warning messages on page 222 if an engine oil level display appears on the multifunction display when the engine is running. Note: See page 110 for engine oil level indicator. 246 Coolant level Automatic transmission fluid level The transmission has a permanent fill of automatic transmission fluid. Regular automatic transmission fluid level checks and changes are not required. For this reason the dipstick is omitted. If you notice fluid leaks or gear shifting malfunctions, have your authorized Mercedes-Benz Center check the transmission fluid level. P20.30-2032-26 To check the coolant level, the vehicle must be parked on level ground and the engine stopped. Check coolant level only when coolant is cold. The coolant level should reach the black top part of the reservoir. Engine compartment Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 247 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index • Using a rag, slowly open cap approximately 1/2 turn to relieve excess pressure. If opened immediately, scalding hot fluid and steam will be blown out under pressure. • Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. Engine compartment Adding coolant If coolant has to be added, a 50/50 mixture of water and MB anticorrosion/antifreeze should be added. The drain plugs for the cooling system are located on the right side of the engine block and at the bottom of the radiator. Anticorrosion/antifreeze mixture, see page 311. Warning! In order to avoid possible serious burns or injury: • Use extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature gauge indicates that the coolant is overheated. • Do not remove pressure cap on coolant reservoir if engine temperature is above 194°F (90°C). Allow engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure. 248 Windshield washer/headlamp cleaning system Warning! Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/antifreeze on hot engine parts, because it may burn. You can be seriously burned. Windshield and headlamp washer fluid mixing ratio P82.35-2017-26 1 Windshield washer/headlamp cleaning system fluid reservoir Capacity approx. 7.4 US qt (7.0 l). The reservoir should be refilled with MB Windshield washer concentrate and water (or commercially available premixed windshield washer solvent/ antifreeze, depending on ambient temperatures). For temperatures above freezing: MB Windshield Washer Concentrate “S” and water. 1 part “S” to 100 parts water (40 ml “S” to 1 gallon water). For temperature below freezing: MB Windshield Washer Concentrate “S” and commercially available premixed windshield washer solvent/antifreeze. 1 part “S” to 100 parts solvent (40 ml “S” to 1 gallon solvent). Engine compartment Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 249 Index Instruments and controls Tires, Wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index Wheels Replace rims or tires with the same designation, manufacturer and type as shown on the original part. See your authorized Mercedes-Benz Center for further information. See your authorized Mercedes-Benz Center for information on tested and recommended rims and tires for summer and winter operation. They can also offer advice concerning tire service and purchase. Tire replacement Front tires should be replaced in sets. Rims and tires must be of the correct size and type. For dimensions, see “Technical Data” We recommend that you break in new tires for approx. 60 miles (100 km) at moderate speed. It is imperative that the wheel mounting bolts be fastened to a tightening torque of 80 ft.lb. (110 Nm) whenever wheels are mounted. For rim and tire specifications, refer to “Technical Data” Warning! Worn, old tires can cause accidents. If the tire tread is badly worn, or if the tires have sustained damage, replace them. When replacing rims, use only genuine Mercedes-Benz wheel bolts specified for the particular rim type. Failure to do so can result in the bolts loosening and possibly an accident. 250 Rotating wheels CLK 430: Wheel rotation applies only when winter tires are mounted on all four wheels. The wheels can be rotated according to the degree of tire wear while retaining the same direction of travel. Rotating, however, should be carried out as recommended by the tire manufacturer, before the characteristic tire wear pattern (shoulder wear on front wheels and tread center wear on rear wheels) becomes visible, as otherwise the driving properties deteriorate. Important! Unidirectional tires must always be mounted with arrow on tire sidewall pointing in direction of vehicle forward movement. Notes: Thoroughly clean the inner side of the wheels any time you rotate the wheels or wash the vehicle underside. The use of retread tires is not recommended. Retread tires may adversely affect the handling characteristics and safety of the vehicle. Dented or bent rims can cause tire pressure loss and damage to the tire beads. For this reason, check rims for damage at regular intervals. The rim flanges must be checked for wear before a tire is mounted. Remove burrs, if any. Check and ensure proper tire inflation pressure after rotating the wheels. For tire inflation pressure see inside of fuel filler flap and also page 259. Tires, Wheels Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 251 Index Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Tires, Wheels Spare wheel Spare wheel CLK 320 Important! The spare wheel rim is mounted with a full size tire of the same type as on the vehicle, and is fully functional. However, that spare wheel rim is weight optimized and has a limited service life of 12 000 miles (20 000 km) use before a standard wheel rim must replace it. In the case of a flat tire, you may temporarily use the spare wheel. Do not operate vehicle with more than one spare wheel mounted. Unidirectional tires must always be mounted with arrow on tire sidewall pointing in direction of vehicle forward movement. If the arrow on tire side wall does not point in direction of vehicle forward movement when using the spare wheel, observe the following restriction: • Drive to the nearest tire repair facility as soon as possible. For rim and tire specifications, refer to “Technical Data” Warning! The spare wheel rim is for temporary use only. Use for over a total of 12 000 miles (20 000 km) (aggregate of all uses) may cause wheel rim failure leading to an accident and possible injuries. 252 Spare wheel CLK 430 Important! The spare wheel rim size is 71/2 J x 17 H 2. The spare wheel rim is mounted with a full size tire of the same type as on the vehicle’s front axle, and is fully functional. However, that spare wheel rim is weight optimized and has a limited service life of 12 000 miles (20 000 km) use before a standard wheel rim must replace it. If the arrow on tire side wall does not point in direction of vehicle forward movement when using the spare wheel, observe the following restriction: • Drive to the nearest tire repair facility as soon as possible. In the case of a rear axle flat tire, you may temporarily use the spare wheel, when observing the following restrictions: • Do not exceed vehicle speed of 50 mph (80 km/h) • Drive to the nearest tire repair facility to have the flat tire repaired or replaced as appropriate. Do not operate vehicle with more than one spare wheel mounted. Unidirectional tires must always be mounted with arrow on tire sidewall pointing in direction of vehicle forward movement. For rim and tire specifications, refer to “Technical Data” Warning! The spare wheel rim is for temporary use only. Use for over a total of 12 000 miles (20 000 km) (aggregate of all uses) may cause wheel rim failure leading to an accident and possible injuries. The dimensions of the spare wheel are different from those of the road wheels for the rear axle. As a result, the vehicle handling characteristics change when driving with a spare wheel mounted on the rear axle. The spare wheel should only be used temporarily, and replaced with a regular road wheel as quick as possible. Tires, Wheels Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 253 Index Instruments and controls Tires, Wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index Changing wheels Warning! The jack is designed exclusively for jacking up the vehicle at the jack tubes built into either side of the vehicle. To help avoid personal injury, use the jack only to lift the vehicle during a wheel change. Never get beneath the vehicle while it is supported by the jack. Keep hands and feet away from the area under the lifted vehicle. Always firmly set parking brake and block wheels before raising vehicle with jack. Do not disengage parking brake while the vehicle is raised. Be certain that the jack is always vertical when in use, especially on hills. Always try to use the jack on level surface. Be sure that the jack arm is fully inserted in the jack tube. Always lower the vehicle onto sufficient capacity jackstands before working under the vehicle. Move vehicle to a level area which is a safe distance from the roadway. Warning! Before working on the vehicle, e.g. when changing wheels, the roll bar should be raised with the switch, and the electronic key be removed from the steering lock, to prevent possible injury. 1. Set parking brake and turn on hazard warning flasher. 2. Move selector lever to position “P” and turn off engine. 3. Prevent vehicle from rolling away by blocking wheels with wheel chocks (not supplied with vehicle) or sizable wood block or stone. When changing a wheel on a hill, place chocks on the downhill side blocking both wheels of the other axle. On a level road, place one chock in front of and one behind the wheel that is diagonally opposite to the wheel being changed. 254 4. Using the wrench, loosen but do not yet remove the wheel bolts. 5. Remove the protective cover from the jack support tube opening by inserting the screwdriver (supplied in the tool kit) in the opening and prying it out. The tube openings are located directly behind the front wheel housings and in front of the rear wheel housings. Tires, Wheels Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 255 Index Instruments and controls Tires, Wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index CLK 430 shown The tube openings are located directly behind the front wheel housing and in front of the rear wheel housings. 6. Insert jack arm fully into the tube hole up to the stop. Place jack on firm ground. Position the jack so that it is always vertical (plumb-line) as seen from the side (see arrow), even if the vehicle is parked on an incline. 7. Jack up the vehicle until the wheel is clear of the ground. Never start engine while vehicle is raised. 256 Instruments and controls Tires, Wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index P40.10-2167-26 8. Unscrew upper-most wheel bolt and install alignment bolt (1) supplied in the tool kit. Remove the remaining bolts. Keep bolt threads protected from dirt and sand. 9. Remove wheel. Grip wheel from the sides. Keep hands from beneath the wheels. 10. Clean contact surfaces of wheel and wheel hub. Install wheel on wheel hub. Insert wheel bolts and tighten them slightly. To avoid paint damage, place wheel flat against hub and hold it there while installing first wheel bolt. Unscrew the alignment bolt (1) to install the last wheel bolt. 257 Warning! Always replace wheel bolts that are damaged or rusted. Never apply oil or grease to wheel bolts. Damaged wheel hub threads should be repaired immediately. Incorrect mounting bolts or improperly tightened mounting bolts can cause the wheel to come off. This could cause an accident. Be sure to use the correct mounting bolts. Warning! The spare wheel rim is for temporary use only. Use for over a total of 12 000 miles (20 000 km) (aggregate of all uses) may cause wheel rim failure leading to an accident and possible injuries. 11. Lower vehicle. Remove jack and insert jack tube cover. 12. Using the wrench, tighten the five bolts evenly, following the sequence illustrated, until all bolts are tight. Observe a tightening torque of 80 ft.lb. (110 Nm). 13. Ensure proper tire pressure. Tires, Wheels Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 258 Index Tire inflation pressure A table (see fuel filler flap) lists the tire inflation pressures specified for Mercedes-Benz recommended tires as well as for the varying operating conditions. Important! Tire pressure changes by approx. 1.5 psi (0.1 bar) per 18°F (10°C) of air temperature change. Keep this in mind when checking tire pressure inside a garage – especially in the winter. Example: If garage temperature = approx. +68°F (+20°C) and ambient temperature = approx. +32°F (0°C) then the adjusted air pressure = specified air pressure +3 psi (+0.2 bar). Tire pressures listed for light loads are minimum values offering high driving comfort. Increased inflation pressures for heavy loads produce favorable handling characteristics with lighter loads and are perfectly permissible. The ride of the vehicle, however, will become somewhat harder. Tire temperature and pressure increase with the vehicle speed. Tire pressure should therefore only be checked and corrected on cold tires. Correct tire pressure in warm tires only if pressure has dropped below the pressure listed in the table and the respective operating conditions are taken into consideration. An underinflated tire due to a slow leak (e.g. due to a nail in the tire) may cause damage such as tread separation, bulging etc.. Regular tire pressure checks (including the spare tire) at intervals of no more than 14 days are therefore essential. Tires, Wheels Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data 259 Index Instruments and controls Tires, Wheels Operation Driving Instrument cluster display Practical hints Car care Technical data Index If a tire constantly loses air, it should be inspected for damage. The spare tire should be checked periodically for condition and inflation. Spare tire will age and become worn over time even if never used, and thus should be inspected and replaced when necessary. Warning! Do not overinflate tires. Overinflating tires can result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc.. Follow recommended inflation pressures. Do not overload the tires by exceeding the specified vehicle capacity weight (as indicated by the label on the driver’s door latch post). Overloading the tires can overheat them, possibly causing a blowout. 260 Instruments and controls Battery Battery Operation Driving Instrument cluster display Practical hints Car care Technical data Index Warning! Failure to follow these instructions can result in severe injury or death. Never lean over batteries while connecting, you might get injured. Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or clothing. In case it does, immediately flush affected area with water and seek medical help if necessary. A battery will also produce hydrogen gas, which is flammable and explosive. Keep flames or sparks away from battery, avoid improper connection of jumper cables, smoking etc.. Important! Battery replacement information: The maintenance-free battery is located in the trunk under the trunk floor. The service life of the battery is dependent on its condition of charge. The battery should always be kept sufficiently charged, in order to last an optimum length of time. Therefore, we strongly recommend that you have the battery charge checked frequently, and corrected if necessary, especially if you use the vehicle less than approximately 200 miles (300 km) per month, mostly for short distance trips, or if it is not used for long periods of time. Only charge a battery with a battery charger after the battery has been disconnected from the vehicle’s electrical circuit. Always disconnect the battery negative lead first and connect last.

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2000 Mercedes-benz CLK Class Cabriolet Owners Manual